It's always interesting to read how people got involved with crypto. I've learned a lot about money as well and main lesson has been - don't be greedy.
There's so many coin that I was holding from very early days NEO, Omisego etc, which I still hold today. When the price was shooting up I wasn't selling even though I knew it most probably going to have a correction.
Nothing wrong with just buying and holding, don't get me wrong. Most people lose money by making the wrong calls when trading. But I think the way crypto markets move at the moment and if you do have some understanding of trading then it's way more profitable to trade and ride with the hype.